Matt Damon and his wife, Luciana Barroso, are planning to celebrate their marriage in April with the destination wedding they never had, Page Six can exclusively reveal.

A-listers were buzzing in LA over Oscar weekend that the “Saving Private Ryan” star and his wife have sent out “save the date” cards to close family and friends for an April bash that’s so top-secret, even the guests haven’t been told the location yet.

“They had a really low-key wedding in Manhattan,” a Hollywood source explained, adding, “so now they want to do something bigger.”

Sources said that while details of the bash are being kept hush-hush, one rule for guests lucky enough to be invited will be “no kids” on the trip.

Damon and Barroso wed back in 2005 at city hall — where the only non-family guest was Mayor Bloomberg, Damon has said.

The wedding was so private, it even reportedly caught some of Damon’s closest friends, including Ben Affleck, by surprise. So now, sources say, the couple will have the chance to celebrate with their nearest and dearest.

At the time, busy Damon didn’t have time for a honeymoon: He went straight back to the set of the movie he was working on — Robert De Niro’s “The Good Shepherd” — and brought Barroso with him to film in London. “I guess we’ll have our honeymoon there,” he was reported as saying.

Devoted family man Damon and his wife have four daughters, including one from Barroso’s previous marriage, who was also at his city hall ceremony.

Reps for the actor did not respond to a request for comment.

Busy Damon’s starring in Steven Soderbergh’s highly anticipated Liberace film, “Behind the Candelabra,” with Michael Douglas. And Damon’s next headed into production on the George Clooney-directed “Monuments Men,” with a blockbuster cast that includes Clooney, Daniel Craig, Bill Murray, Jean Dujardin, Cate Blanchett, “Downton Abbey” star Hugh Bonneville and John Goodman.